Regular Expression Denial of Service Vulnerability in darylldoyle svg-sanitizer Plugin
CVE-2026-121445

8.2HIGH

Key Information:

Vendor

Darylldoyle

Status
Svg-sanitizer
Vendor
CVE Published:
3 November 2026

What is CVE-2026-121445?

The darylldoyle svg-sanitizer plugin prior to version 1.1.0 is vulnerable to a regular expression denial of service (ReDoS) issue. This vulnerability arises in the image-set pattern of the stripRemoteCssTokens() function when the removeRemoteReferences option is enabled. Attackers can exploit this by submitting specially crafted SVG files containing numerous unclosed image-set tokens. This action can exhaust CPU resources or trigger the PCRE limits, causing the sanitize() function to raise a TypeError and potentially leave unsanitized content.

Affected Version(s)

svg-sanitizer 1.0.0 < 1.1.0

svg-sanitizer 1.1.0

References

https://github.com/darylldoyle/svg-sanitizer/security/adv...
vendor-advisory
https://www.vulncheck.com/advisories/svg-sanitizer-1.0.0-...
third-party-advisory

CVSS V4

Score:
8.2
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.